Top 298 Cybersecurity systems engineer Jobs in Reston, Va

Specialist, Systems Engineering (Mission Protection) (TS/SCI w Poly)
L3Harris Technologies —Springfield, VA
- $92,500 - $171,500 a year
- Full-time
- Mid-level
- Analysis skills
- Bachelor's degree
- Paid holidays
- Disability insurance
5d
Information Security Systems Engineer
L3Harris Technologies —Chantilly, VA
- $106,500 - $197,500 a year
- Full-time
- Bachelor's degree
- Senior level
- 4 years
- Paid holidays
- Disability insurance
Cybersecurity Implementation Engineer
General Dynamics Information Technology —Springfield, VA
- $124,093 - $149,500 a year
- 6 years
- Writing skills
- Research
Cybersecurity Systems Engineer (Entry Level to SME) TS/SCI with Poly REQUIRED
CGI Group, Inc. —Arlington, VA
- $89,600 - $204,000 a year
- Azure
- System design
- Office
- Paid parental leave
- Paid holidays
Cybersecurity Systems Engineer/Information Systems Security Engineer (ISSE) - TS/SCI with Polygraph
General Dynamics Information Technology —Washington, DC
- $164,382 - $212,750 a year
- In-person
- Senior level
- No travel
- Paid time off
- 401(k) matching
2026 Associate Cyber Systems Engineer - Chantilly VA
Northrop Grumman —Chantilly, VA
- $83,800 - $125,800 a year
- Overtime
- Computer Science
- Bachelor's degree
- Travel
- Paid holidays
- Disability insurance
5d
Embedded Systems Reverse Engineer
Two Six Technologies —Reston, VA
- $111,983 - $167,974 a year
- Email
- Computer Science
- Mid-level
- Office
Quick Apply
3d
Cyber Security Systems Engineer
Emergent Technologies Inc —Reston, VA
- Full-time
- Azure
- 11+ years
- AWS
- Dental insurance
- Paid time off
Quick Apply
Cybersecurity Systems Engineer
General Dynamics Mission Systems, Inc —Manassas, VA
- $99,916 - $110,844 a year
- Full-time
- Hybrid work
- Mid-level
- Master's degree
- Analysis skills
- Paid parental leave
- Health insurance
13d
Cybersecurity Integration Engineer
Steampunk —McLean, VA
- $110,000 - $150,000 a year
- Oracle
- Computer Science
- 5 years
Network Access Control Systems Engineer
Ascension Federal Services Inc. —Falls Church, VA
- Computer Science
- System design
- Mid-level
Quick Apply
F-35 Air Systems Cybersecurity Engineer | Active TS/SCI clearance
General Dynamics Information Technology —Arlington, VA
- $114,750 - $155,250 a year
- Hybrid work
- Computer Science
- Bachelor of Science
- Analysis skills
- Paid time off
- 401(k) matching
Sr. Zero Trust Engineer III (6794)
MetroStar —Tysons Corner, VA
- $150,000 - $190,000 a year
- Full-time
- Computer Science
- 5 years
- DevOps
- Paid training
- Paid holidays
Quick Apply
Information Systems Security Engineer (ISSE)
Peraton —Washington, DC
- $104,000 - $166,000 a year
- Azure
- Bachelor of Science
- System design
- Health savings account
- Paid holidays
Sr. Zero Trust Engineer III (6794)
MetroStar —Washington, DC
- $150,000 - $190,000 a year
- Full-time
- Computer Science
- 5 years
- DevOps
- Paid training
- Paid holidays
Quick Apply
Sr. Zero Trust Engineer III (6794)
MetroStar —Reston, VA
- $150,000 - $190,000 a year
- Full-time
- Computer Science
- 5 years
- DevOps
- Paid training
- Paid holidays
Quick Apply
Senior Cloud Information System Security Engineer
MANTECH —Washington, DC
- Full-time
- 6 years
- Computer Science
- Office
3d
Cybersecurity Implementation Engineer
CACI —Springfield, VA
- $94,400 - $198,200 a year
- Full-time
- 6 years
- Computer Science
- Writing skills
- Health insurance
Cyber Security Engineer (Cyber Implementation)
Cherokee Federal —Springfield, VA
- $150,000 - $155,000 a year
- Full-time
- 6 years
- Writing skills
- System design
- Health insurance
- Dental insurance
Lead, Information Security Systems Engineering
L3Harris Technologies —Chantilly, VA
- $110,500 - $236,500 a year
- Full-time
- 6 years
- System design
- Bachelor's degree
- Paid holidays
- Disability insurance

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Specialist, Systems Engineering (Mission Protection) (TS/SCI w Poly)

L3Harris Technologies -
Springfield, VA

Apply Now

Job Details

Full-time
$92,500 - $171,500 a year
5 days ago

Benefits

Paid holidays
Disability insurance
Health insurance
Flexible spending account
Paid time off
Parental leave
Employee assistance program
401(k) matching

Qualifications

Threat Modeling (Architecture security)
TS/SCI with Polygraph
RMF

Full Job Description

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Specialist, Systems Engineer – Mission Protection Specialist (Active TS/SCI w/ CI Poly Required)
Job Code: 40712
Job Location: Springfield, Virginia
Job Schedule: 5/8 Monday - Friday

Job Description:

L3Harris Technologies is currently seeking a Senior Specialist, Systems Engineer – Mission Protection Specialist to support a high-visibility, mission-critical national security program. This position is responsible for identifying, assessing, and mitigating threats to space, cyber, and ground systems supporting U.S. government missions.
The ideal candidate will apply operational security (OPSEC), counterintelligence, cyber defense, and threat principles to protect sensitive capabilities to ensure the survivability of U.S. assets in contested environments.

Conduct mission protection assessments to identify vulnerabilities across space, cyber, and ground architectures.
Collaborate with mission planners, operators, and mission partners to integrate protection strategies throughout the system lifecycle.
Support the development of mitigation plans and help implement countermeasures aligned with mission assurance priorities.
Coordinate with DoD and IC stakeholders to ensure protection efforts are synchronized with national-level guidance and classification policies.
Develop and maintain program-specific threat models, Concept of Operations (CONOPS), and risk management frameworks.
Contribute to red/blue team assessments, tabletop exercises, and program security reviews.
Prepare briefings and documentation for senior leadership on threat assessments, mitigation strategies, and mission assurance outcomes.
Ability to obtain and maintain a crew operations certification.
Able to work independently and collaboratively in classified operations centers, supporting 24/7 mission requirements when needed.

Qualifications:

Bachelor’s Degree and minimum 4 years of prior relevant experience. Graduate Degree and a minimum of 2 years of prior related experience. In lieu of a degree, minimum of 8 years of prior related experience.
Active Top Secret/SCI with CI Poly clearance required.
Experience with threat modeling, vulnerability analysis, and risk management.
Experience working with or supporting a Weapons and Tactics (W&T) team, with familiarity in integrating protection strategies.

Preferred Additional Skills:

Graduate of Air Force Weapon School or Advance Instructor Course (AIC).
Strong written and verbal communication skills, including experience briefing senior stakeholders.
DoD/NRO Systems Liaison / Field Representative.
Strong Orbital Mechanics Background.
System Tool Kit (STK) Level 2/3 Certification; Orbit Determination Tool Kit (ODTK).

In compliance with pay transparency requirements, the salary range for this role in Virginia - Greater Washington, D.C. Area $92,500 - $171,500.00. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.

#LI-ZB1

L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.

L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.

Apply Now

Refine Your Search

cybersecurity systems engineer jobs in reston, va

Specialist, Systems Engineering (Mission Protection) (TS/SCI w Poly)

Information Security Systems Engineer

Cybersecurity Implementation Engineer

Cybersecurity Systems Engineer (Entry Level to SME) TS/SCI with Poly REQUIRED

Cybersecurity Systems Engineer/Information Systems Security Engineer (ISSE) - TS/SCI with Polygraph

2026 Associate Cyber Systems Engineer - Chantilly VA

Embedded Systems Reverse Engineer

Cyber Security Systems Engineer

Cybersecurity Systems Engineer

Cybersecurity Integration Engineer

Network Access Control Systems Engineer

F-35 Air Systems Cybersecurity Engineer | Active TS/SCI clearance

Sr. Zero Trust Engineer III (6794)

Information Systems Security Engineer (ISSE)

Sr. Zero Trust Engineer III (6794)

Sr. Zero Trust Engineer III (6794)

Senior Cloud Information System Security Engineer

Cybersecurity Implementation Engineer

Cyber Security Engineer (Cyber Implementation)

Lead, Information Security Systems Engineering

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